Run results for: JavaScript spread operator vs object update performance

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 140

Operating system: Android

Device Platform: Mobile

Date tested: 10 months ago

Using update

25.3M/s

Using Object.assign

5.7M/s

View exact numbers

Test name	Executions per second
✓ Using update	25,273,262 Ops/sec
Using Object.assign	5,734,487 Ops/sec

Tests:

Using update
const firstObject = {} firstObject.sampleData = 'Hello world'; firstObject.moreData = 'foo bar';
Using Object.assign
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = Object.assign(firstObject, secondObject);